Atoms
Celestial Bodies
- Space Travel Equipment
- Stars
- Rotation and Revolution
- Relation Between Escape Velocity And Orbital Velocity
- Dwarf Planets
- Difference Between Solar Eclipse And Lunar Eclipse
- Difference Between Equinox And Solstice
- The Escape Velocity Of Earth
- Solar System
- Difference Between Stars And Planets
- Difference Between Asteroid And Meteoroid
- Constellations
Circuits
电路 (diàn lù)
电路 (Diànlù)
电路
通信系统Pdf
二极管
地球科学
电荷
电
- 类型的齿轮
- 电子产品在日常生活中
- 类型的汽车
- 类型的直流电机
- 类型的交流电机
- 晶体管工作
- 转矩电流环
- 电动机
- 电阻温度依赖性
- Rms值交流电
- 电抗和阻抗
- 相量表示法交流
- 平行板电容器
- 焦耳定律
- 电力
- 磁场对载流导线的影响
- 电流密度
- 导体绝缘体
- 导电
- 碳电阻器
- 直流发电机
- 类型的发电机
- 类型的电流
- 直流发电机类型
- Torque On Dipole
- 电流的热效应
- 电动发电机
- 静电
- 电阻率不同的材料
- 电场的物理意义
- 介电常数和磁导率
- 电能和权力
- 电流在导体
- 电动汽车
- 位移电流
- 电阻与电阻率之间的差异
- 电动机和发电机之间的区别
- 接地和接地之间的区别
- 电流线圈
- 水的电导率
- 导电的液体
Electricity
电磁波
电磁
静电学
能量
- 能量
- 能源类型
- 热能
- 太阳能项目
- 太阳能汽车
- Ev和Joule之间的关系
- 动能和完成的功
- 能量转换
- 一维和二维的弹性和非弹性碰撞
- 常规能源和非常规能源
- 太阳能炊具
- 潮汐能
- 能源
- 太阳能和光伏电池
- 动能与动量的关系
- 热量与焦耳的关系
- 能源及其对环境的影响
- 能源考虑
流体
武力
Force
摩擦
万有引力
热
动力学理论
光
- 镜面反射漫反射
- 人眼
- 结构人眼功能
- 阴影的形成
- 反射和折射之间的区别
- 相干源
- 光的透射、吸收和反射
- 透明半透明和不透明
- 阳光白色
- 单狭缝衍射
- 拉曼散射
- 粒子自然光光子
- 真实图像与虚拟图像的区别
- 衍射和干涉的区别
磁性
运动
- 运输历史记录
- 速度-时间图
- 旋转动能
- 刚体和刚体动力学
- 扭矩和速度之间的关系
- 粒子的直线运动
- 周期性运动
- 动量和惯性之间的差异
- 动量守恒
- 运动测量类型
- 扭矩
- 慢速和快速运动
- 滚动
- 刚体平移运动和旋转运动
- 相对速度
- 径向加速度
- 速度和速度之间的区别
- 动力学和运动学的区别
- 连续性方程
- 线性动量守恒
自然资源
核物理学
光学
Optics
- Reflection of Light and Laws of Reflection
- Concave Lens
- Total Internal Reflection
- Thin Lens Formula For Concave And Convex Lenses
- Spherical Mirror Formula
- Resolving Power Of Microscopes And Telescopes
- Refractive Index
- Refraction Of Light
- Refraction Light Glass Prism
- Reflection On A Plane Mirror
- Reflection Lateral Inversion
- Rainbow
- Photometry
- Difference Between Simple And Compound Microscope
- Difference Between Light Microscope And Electron Microscope
- Concave Convex Mirror
- Toric Lens
- The Lens Makers Formula
- Simple Microscope
Oscillation
Pressure
- Thrust Pressure
- Relation Between Bar And Pascal
- Regelation
- Sphygmomanometer
- Relation Between Bar And Atm
- Difference Between Stress And Pressure
Quantum physics
- Quantum physics
- Rydberg Constant
- Electron Spin
- Casimir Effect
- Relativity
- Quantum Mechanics
- Electrons And Photons
Radioactivity
- Relation Between Beta And Gamma Function
- Radioactivity Beta Decay
- Radioactive Decay
- Stefan Boltzmann Constant
- Radioactivity Gamma Decay
- Radioactivity Alpha Decay
- Radiation Detector
Scalars and Vectors
- Scalars and Vectors
- Triangle Law Of Vector Addition
- Scalar Product
- Scalar And Vector Products
- Difference Between Scalar And Vector
Scientific Method
- Scientific Methods
- Safety Measures Technology
- Difference Between Science And Technology
- Scientific Investigation
Semiconductors
- Semiconductor Devices
- Junction Transistor
- Semiconductor Diode
- Difference Between Npn And Pnp Transistor
Solid Deformation
- Solid State Physics
- Solid Deformation
- Stress
- Shear Modulus Elastic Moduli
- Relation Between Elastic Constants
- Elastic Behavior Of Solids
- Tensile Stress
- Stress And Strain
- Shearing Stress
- Elastomers
- Elastic Behaviour Of Materials
- Bulk Modulus Of Elasticity Definition Formula
Sound
- Sound waves
- Timbre
- Speed Of Sound Propagation
- Sound Waves Need Medium Propagation
- Sound Reflection
- Sound Produced Humans
- Doppler Shift
- Difference Between Sound Noise Music
- The Human Voice How Do Humans Create Sound With Their Vocal Cord
- Sound Vibration Propagation Of Sound
- Sound Produced Vibration Object
- Reverberation
- Doppler Effect
System of Particles and Rotational Dynamics
Thermal Properties of Matter
- Thermal Properties of Materials
- Thermal Stress
- Thermal Expansion Of Solids
- Thermal Conductivity Of Metals
Thermodynamics
- Statistical Physics
- SI Units List
- Statistical Mechanics
- Reversible Irreversible Processes
- Carnots Theorem
- Temperature
- Kelvin Planck Statement
- Difference between Isothermal and Adiabatic Processes
Units and measurements
- Density of Air
- The Idea Of Time
- Difference Between Pound And Kilogram
- Difference Between Mass And Volume
- Dimensional Analysis
- Density Of Water
- Time Measurement
- Standard Measurement Units
- Relation Between Kg And Newton
- Relation Between Density And Temperature
- Difference Between Mass And Weight
Waves
- Space Wave Propagation
- Sharpness Of Resonance
- Relation Between Group Velocity And Phase Velocity
- Relation Between Amplitude And Frequency
- Periodic Function
- P Wave
- Destructive Interference
- Transverse Waves
- Travelling Wave
- Standing Wave Normal Mode
- S Waves
- Relation Between Frequency And Velocity
- Reflection Of Waves
- Phase Angle
- Period Angular Frequency
Work, Energy and Power
- Derivation Of Work Energy Theorem
- Conservation Of Mechanical Energy
- Relation Between Work And Energy
- Destruction Caused Cyclones
Physics Experiments
- Determine Resistance Plotting Graph Potential Difference versus Current
- To find the weight of a given Body using Parallelogram Law of Vectors
- To study the variation in volume with pressure for a sample of air at constant temperature by plotting graphs between p and v
- To measure the thickness of sheet using Screw Gauge
- To find the value of V for different U values of Concave Mirror find Focal Length
- To find the Surface Tension of Water by Capillary Rise Method
- To find the Resistance of given wire using Metre Bridge and hence determine the Resistivity of its Material Experiment
- Determine Mass of Two Different Objects Using Beam Balance
- Tracing the path of the rays of light through a glass Prism
- Tracing path of a ray of light passing through a glass slab
- Tornado Bottle
- To find image distance for varying object distances of a convex lens with ray diagrams
- To find force constant of helical spring by plotting a graph between load and extension
- To find focal length of concave lens using convex lens
- To find effective length of seconds pendulum using graph
- To find downward force along inclined plane on a roller due to gravitational pull of the earth and its relationship with the angle of inclination
- To draw the IV characteristic curve for p n junction in forward and reverse bias
- To determine Young’s modulus of elasticity of the material of a given wire
- To determine the internal resistance of a given primary cell using a potentiometer experiment
- To determine the coefficient of viscosity of given viscous liquid by measuring terminal velocity of given spherical body
- To determine specific heat capacity of given solid by method of mixtures
- To determine radius of curvature of a given spherical surface by a Spherometer
- Scope and Excitement of Physics
- Rocket science
- Relationship between frequency and length of wire under constant tension using Sonometer
- To determine equivalent resistance of resistors when connected in series and in parallel
- To convert the given galvanometer of known resistance and figure of merit into a voltmeter of desired range and to verify the same experiment
- To determine minimum deviation for given prism by plotting graph between angle of incidence and angle of deviation
- To compare the emf of two given primary cells using potentiometer experiment
Introduction
领导是发光的半导体光源只在一个方向当电流通过它时,不同于普通的荧光灯和白炽灯。这是发光二极管,它是更有效的低功耗的优点,更好的照明,和更长的寿命。在远程控制器等电子设备,ACs,手机,相机使用。LED照明几乎是90%更有效的领导与节能灯比普通节能灯的寿命减少时,它提供了一个30%的光输出。在这个现代化的世界,led照明创新提供一个绝佳的机会。
What is LED?
发光二极管是一种正常的pn结二极管半导体和各种pghtemitting属性。直接带隙材料如砷化镓(砷化镓),这是一个半导体化合物,使用LED(徐 et al . 2017)。在这个砷化镓,掺杂剂原子被添加,让它发出大量的颜色。< / p >
< img src = " /资产/问题/媒体/ 1745 - 1664172747. - jpg”/ >
Figure 1: LED p-n junction structuring
材料中使用的LED照明灯泡磷化镓砷,铝磷化镓、硒化锌、铝砷化镓和氮化镓铟。led照明白光是最首选。生产的白光led下面提到的有两个主要方法。
等三个主要的灯红,绿,蓝(RGB)信用证金额通常产生白光。这个过程具有高量子效率(芯片,2022)。
另一种方法包括LED灯泡的涂层与一种颜色和不同颜色的磷光产生白光。这是一种常见的方法,用于生产LED照明和灯泡。
LED structure
LED灯和灯泡是结构化的方式,这样发射从它发出的光只在1方向。其他传统的普通灯泡像节能灯意味着紧凑型荧光灯和白炽灯发出的光和热分散在各个方向。领导正在设计更持久、更有效、更多功能比普通灯。< / p >
< img src = " /资产/问题/媒体/ 1745 - 1664172794. - jpg”/ >
Figure 2: LED Lighting Technology
led能够更有效地使用能源和灯在许多应用程序中。复杂的工程需要为了生产LED灯,可以照亮灯四面八方节能灯和白炽灯(芯片,2022)。发光二极管是由陶瓷或铝的身体提供适当的散热和LED照明的主要类别之一。爱迪生灯泡与陶瓷和铝机构设计。
LED: Classifications
发光二极管可以根据大小分类,应用程序和权力交付能力。有几种类型的LED灯,根据他们的大小可分为:电流的微型LED,微型LED超高输出微型LED和标准。的发光二极管分类根据他们的权力交付能力是大功率led,照亮灯所有的方向。的发光二极管分类的基础上,他们的应用程序是Bi和三色发光二极管,RGB LED, LED灯,闪光发光二极管,和字母数字LED。常用的led微型led等各种电子设备的远程系统,手机,汽车前照灯,计算器,和许多更多。
LED: Characteristics features
发光二极管被认为是半导体的光照射光源时,电流通过二极管。发光二极管的电流是单向与传统节能灯和白炽灯。led的二极管是广泛使用,因为他们的效率和有效性的长寿命,更好的照明,低能耗(回族 et al . 2017)。利用基于电流输出的LED电流的领导,超高输出领导和领导的标准。领导的双色的,有两个发光二极管在一个案例中。布线是反向平行的流动电流2二极管之间交替,导致颜色的变化。
LED: Working principle
发光二极管在正向偏压时工作状态就像普通的二极管。这里,n型半导体掺杂比p型半导体和更严重的结pn(徐 et al . 2017)。在正向偏压状态势垒降低和空穴和电子结合形成一个活跃的层或耗尽层。< / p >
< img src = " /资产/问题/媒体/ 1745 - 1664172865. - jpg”/ >
Figure 3: Working principles of LEDs
在这种状态下,光子和灯在各个方向辐射或排放。在上面的图中,可以看到光发射电子空穴对的因为结合正向偏置。光子发射强调领导的二极管在于固体的能带理论。这一理论指出,电子空穴,联合发出光子或不会将取决于如果材料有直接或间接带隙。
Conclusion
领导是一个方向的光源,与节能灯和白炽灯发出光和热。在闪光led闪光的集成电路一个特定频率的光。他们通过一系列电阻与电源相连,用于车辆、招牌等。LED照明和LED灯泡是注册在Opto-isolators等各种设备或设备,远程控制,汽车前照灯,计算器。他们也作为领导指示,常用在micro-LEDs等电子显示屏,量子点,摄像机,oled。
FAQs
Q1。领导的一个微型的效用是什么?
答。微型led基本上是应用于小型电子设备如手机、远程控制器,和计算器。SunLED nanopoint - 0201系列LED被认为是世界上最小的领导足迹可用。
Q2。你意思二极管?
Ans,电气设备,帮助流动的电流在一个方向上确定二极管。电路中二极管可以被一个三角形的一条直线在1点。
第三季。如何利用led在照明?
答。纳入设备和各种尺寸的led灯泡一般照明应用。LED照明不同于荧光灯和白炽灯。领导更多才多艺,持续时间长,效率比传统灯泡。
第四季度。什么是热管理?
答。LED性能的最重要因素是热管理对其一生。领导通常是在高温下操作,光传播速度快,使消耗的能量更少。